Pipe coupling



' March 11, 1930; A. KALO PIPE COUPLING Filed Aug. 16, 1928 gmemtoz Jlberfffalo l8 Patented Mar. 11, 1930 UNITED, STATES PATENT OFFICE,

ALBERT KALO, or COLUMBUS, orrro, Assrsnon or ONE-HALF TO aosnrn n. cox, or

' COLUMBUS, onro ru n COUPLING Application filed August 16, 1928. Serial No. 299,938.

This invention relates' to improvements in pipe couplings, and has particular reference to pipe couplings'of the type employed in con nection with steam lines orother conduits which carry fluids under conditions of, abnormal pressures or temperatures, it being the primary object of the invention to provide a coupling which when operatively applied to the meeting ends of a pair of communicating conduits, will serve to securely unite and seal said meeting ends for the purpose of providing a strong, durable mechanical connection between the conduits and at the same time provide an efficient seal by which the escape of fluids through the coupling will be effectually precluded.

It is another object of the invention to provide a pipe coupling of the character set forth by means of which the coupling may be readily applied to the registering ends of a pair of conduit sections, this being accomplished in a convenient and labor saving manner irrespective of the wide variety of positions which the communicating conduit sections may assume in actual practice.

It is a further object of the invention to provide a coupling wherein a double seal is provided to prevent the escape of fluids between the joints provided by the registering ends of the conduit sections, said seals being of an all-metallic construction and preferably devoid of compressible materials.

With these and other objects in view which will appear as the description proceeds, the

' z?- invention consists in the novel features of construction, combination of elements and arrangement of parts hereinafter to be fully described and pointed out in the appended claim.

In the accompanying drawing:

Figure 1 is a vertical sectional View taken through a pair of registering conduit sections provided with the improved method comprising the present invention,

Figure 2 is a vertical sectional view, the plane of which being disclosed by the line 22 of Figure 1.

Referring more particularly to the drawings, a pair of registering pipe sections have been indicated y h numerals 1 and 2, wh h the pipe section 1. I Contiguous to the periphery ofthe head,'the latter is provided with a plurality of circularly arranged and circumferentially placed openings 8, which are adapted for the reception of clamping bolts 9, to be hereinafter more fully described.

I I Mounted upon the threaded end of the-pipe section 2 is an internally threaded nut 10, the latter being formed with a flat vertical wall' 11 which registers with'the wall 6 of the head 4. The opposite side of the nut or collar '10 includes a substantially fiat vertical wall 12,]which is' formed to include an annular groove 13 which isalso substantially V shaped in vertical cross-section, as shown in Figure 1.; The nut or collar 10 is threaded upon the pipe section 2 so as to occupy a fixed stationary-pos'ition thereon, and, similarly, the head 4 is threaded on the pipe sectionl to occupy afixed stationary position, its wall 6 being arranged in substantially the vertical plane defining the end of the section 1, and the wall 11 of the nut or collar 10 all preferably arranged to'align with the, vertical endportion of the pipe'section 2. I

Loosely mounted upon the end of the pipe section'2is a movable clamping head 14. This 'head is also of metallic construction and includes a hub portion ,15'provided with a bore '16 which possesses a diameter sufiiciently large to "permit 'the movable head to slide freely lengthwise of the pipe section2. The

head 14 is'of circular formation and includes a flat vertical wall 17 which registers ordinarily with the wall 11 of the nut 10 and in complemental relationship with thewall 6 of the stationary head 4. The wall 17 is provided with a i lar s bstantia y V shap d its I rib 18, which is adapted to enter the groove 7 in the head 4 for the purpose of producing a tight fluid seal to prevent the escape of a fluid from the pipe sections and through the joints of the coupling. It will be observed that the bolts 9 pass throughlongitudinal openings 19 provided near the peripheral portion of the head 14:, andthat the outer ends of said bolts are threaded for the accommodation of nuts 20 which, upon being tightened, admit of relative approach betweenthe stationary and movable heads so that the circular rib 18 will be forced into tight sealing engagement with the walls of the groove/K The hub portion of the'head 14: at one end is provided with an enlarged'socket 21, adapted for the reception of the nut or col-e lar v10, the depth and construction of the socket being such that the wall '11 ofthe nutlO will register with the wall 17 of the head 14: when the coupling occupies its operative position in connection withthe pipe sections.

-T0 prevent the seepage of fluid between the joints or crevices existing between the outerwalls of-the collar or nut 10 and'the walls of the socket 21, the inner vertical wall 22 of said socket is formed'with arVv-shaped ,rib 23,-.which enters the groove 13 formed in the wall 12 of the nut or collar when. the

coupling is assembled. This arrangement produces what may be termed a double seal so that all crevices or meetingfaces ,of the coupling are eflectively closedor united to prevent uncontrolled escape of a fluid from v the pipe sections.

struction and arrangements above set forth and shown in the accompanying drawing,

but reserve the right to employ such varlations and modifications thereof without departing from the scope or spirit of the inset forth the fol-- vention as, the latter is lowing claim. V

What is claimed is: r The combination with a pair of registering a circular ribgprovided upon one of said heads and rece vable within a circular groove fo med n theh ofv a d h ads, a co r sponding ,rib and groove construction beween s d o ab h ad a s d ar, an

clamping m ifp ma n ain ng a ead in vstationary clamped and secured relations iP- ALBERT KALO- In view of the foregoingit will be seen that v V the present invention provides a simple yet 7 materials fluidtight seals are established to prevent. the escape of the fluids conveyed ,efiicient type of pipe coupling which provides 7 out the use of packing or other compressible 1n testimony-whereof I affix my signature.

by theconduit sections throughthecoupling,

The coupling has the advantage of simplicity inapplication in-that it may be readily appliedto a pair of conduitsectionswhile the latter are being erected or placed in fluid conveying relationship; Furthermore, when V repairs or replacements in the fluidline are made, the meeting faces of the coupling sectionsmay bevreadily cleaned .of dirt,"grit or foreign mattersgso that when again assem- V bled the coupling sections will produce the same .efiective seal as they did when first It will ,be understood that the coupling section may be o med; from (a y u ta le materlals ,and that the proportions thereof .mayvary to meet thedemands oftheservice to which they are placed. I, therefore, do notl mit myself to the precise details of con- 

